Rows between Labour and the Conservatives about the SNP have once again featured strongly, with Tory grandees Sir John Major, Lord Tebbit and Lord Forsyth joining the debate.

• Sir John said the SNP could "blackmail" a future Labour government
• But Ed Miliband accused David Cameron of "demeaning his office" with his attacks
• UKIP wants to slash the BBC licence fee
• The Lib Dems say they would increase the council tax paid on second homes
• Conservative chairman Grant Shapps has said a Guardian story linking him with changes to Wikipedia pages is "the most bonkers story" of the campaign so far
• The DUP launched its election manifesto

Newsbeat

Are you after a explanation of some of the key words and phrases being uttered on the campaign trail? Look no further. BBC Newsbeat has prepared a handy video guide to explain all.

This story is based on a single Wikipedia editor who is anonymous," says Mr Shapps, complaining that the Guardian went ahead with the story anyway.

Grant Shapps is talking to the BBC News Channel to deny those Guardian claims that he - or "someone acting on his behalf" - tried to edit Wikipedia pages about himself or other MPs.

"It's the most bonkers story I've seen in this election campaign so far," he says. "A simple look in my diary shows I was elsewhere."

On the subject of health, Paul Uppal, for the Conservatives, addressed mental health spending but argued: "Money alone is not the issue." Lib Dem Norman Lamb, a health minister, promised to treat physical and mental health equally. He highlighted his party's pledge of £1.2bn for the next five years for children and young people.

On education, Labour's Emma Reynolds said: "We need to learn from countries like Germany which value apprenticeships at the same level as degrees."

Readers can continue the discussion using #Newsbeat on Twitter. Another group of young voters will meet next Tuesday in Edinburgh, when the final Newsbeat debate will focus on the cost of living, jobs and housing.

Read more: What you told Newsbeat in Birmingham

More than 100 young voters have been quizzing five politicians during a Newsbeat election debate at the University of Birmingham. The big themes of the night were immigration, education and health. UKIP's Steven Woolfe told the audience "none of our party have ever said we don't like immigrants" while the Green Party's Amelia Womack said "we need to take responsibility for the language we use around migration".

Newsbeat

That was a lively old debate in Birmingham and we'll continue to flag up the closing highlights.

Stuart, 23, tackled the politicians on the UK's "flawed" education system, which he said needed restructuring.

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Conservative party chairman Grant Shapps is denying allegations that he is behind changes made to Wikipedia entries about MPs. According to the Guardian, the online encyclopedia blocked an account amid suspicion it was being used by Mr Shapps or "someone acting on his behalf" to edit pages about himself and other MPs.

But Mr Shapps said: "This Guardian smear is categorically false and defamatory. It is untrue from start to finish, and was quite likely dreamt up by the Labour press office. Sadly it is typical of the smears coming from those who would rather not debate policy and substance."

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Tamanna Miah, 21, from Sevenoaks, says: "I had a friend who [took his own life] because he had no support. The services were not there at the right time. My friend said to me 'I am struggling'.

"I gave him all these options and he said 'no, they're not helping'. He was on a waiting list for over six months."

Newsbeat

Inspired by tonight's debate? Newsbeat has developed a game all about the general election, except with party leaders as robots.

The aim of BallotBots is to pair robot politicians with robot voters while progressing through a series of zones on your way to No 10 - and avoiding the campaign pitfalls. It's available via BBC Taster.

Newsbeat

Peter, in the audience attacks UKIP: "Stop blaming immigrants."

However, UKIP's Steven Woolfe replies: "Look at our manifesto, say it as much as you like, it's just plain wrong."

Watch video of the exchange here, external

Newsbeat

Amelia Womack, of the Green Party, says: "We need to take responsibility for the language we use around migration at the moment. It's clear that people are worried about things they should be worried about [NHS, housing, public service cuts]."